Protect PDF
Lock a PDF with a password.
About Protect PDF
Password-protect a PDF before you share it. Set a password, lock the file in your browser, and download a secured copy.
Use it when you need a quick free lock without installing PDF software.
Frequently asked questions
Is Protect with Password free?
Yes. Protect with Password on Luma is free to use with no signup required.
Are my files uploaded when I use Protect with Password?
No. Processing happens locally in your browser. Files are not uploaded to a server.
How do I use Protect with Password?
Lock a PDF with a password. Open the tool, add your file, adjust options if needed, then download the result.